Hydraulic-joint cartridge



E. RIMAILHO.

HYDRAULIC JOINT CARTRIDGE.

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APPLICATION FILED IuLY27, 1917.

rods,

i duration,

an arrangement of suitably threaded Y EMILE RIMAILI-IO,

or PARIS, FRANCE, Assrenon frol coivrraenn mis Fosses ETl ACIERIES v:DIE LA MARINE ET DI-IOMECOURT,'OF PARIS,` FRANCE.

HYDIRAULIC-JOIN'I` CARTRIDGE. Y

Speccationiof Letters Patent. i

' raient-eu' July 13, 192e.

Application med July 27, 11917. serial' No. 183,203.

VTo all whom t may concern.' Y

Be it known that I, EMILE BIMAILHma citizen of the French Republic, and residing in Paris, France, 98 Rue de la Victoire, consulting engineer, have invented certain new and useful Improvements in and Relating to Hydraulic-Joint Cartridges, of which the following is a complete specification.

In the ordnance-buffers, and, generally, all the hydraulic machines working under pressure, the importance of the stopping periods is such that'the use, for the pistons, or any othersliding organ, of tight and easily mountable joints, capable, at the same time, of a long duration, has always been attempted. Y

l As a result of the difficulty experienced in realizing such conditions of tightness and the most usual hydraulic joints are the chased leathers of the Bramahs type, or the like, and the packings of hemp or other similar material having inconveniences which it has been tried to overcome by merely facilitating the replacing of the same, as soon as their want of tightnessV is deemed prejudicial or improved joints has not been indeed, practically realizable owing to the difficulty of insuring a satisfactory adjustment of such joints withoutv resorting to a specialist workman. f The present'invention has for itsfobject removable joint, the organization of which is designed in view of insuring the easy` replacingV of the same, whatever may be its apparent complexity.

For this purpose, all the organs of the removable mounting which is'previously located tinto a mounting-tube, in which the joint is definitively adjusted for the use to which it is This mounting-tube has an end for immediately fitting itself upon the buffer or the machine to which the joint is intended; the organizationwo'f this so prepared whole is such that the workman who effects the mounting has only to insure the lstrong tightening of the mounting of the joint to obtainits correct setting, without dealing with the joint proper.

In the accompanying drawings, which illustra-te, by way of examples, construeintended.

dangerous the use of *its periphery,

joint are assembled upon a samel vtional forms of removable joints as applied to the piston-heads or lrods used in the buffers iforordnance l Y Y,

Figure 1 illustrates a removable joint for a single acting piston-.head` v Fig."2 shows the mannerof setting this 'joint into place.

Fig. 3 shows said removable joint located 1n its mounting-tube before use.

Fig. 4` illustrates a removable yjoint for piston-rod. v 'Y V Fig. 5 shows the manner of setting the same into place.

Fig. 6 illustrates this removable joint in vits mounting-tube before use.

yIn Fig. 1: 1 is the piston-rod arranged into' the buffercylinder 2 ,terminatingv forward by thefscrew-threads 3; on the rod 1 is providedfthe mounting 4 of the removable joint, comprising the'slidingl elastic joint 5 bearing against the shoulder ,6 of the mounting through the mediumof the joint-ring 7,

which transmits to it the adjustment-pressure ofthe spring washers Stightenedby v the nut 9. Said nut has a wiping leather 10 held by a 'ring 11 under the clamping action of the nut 12. This whole is'tightened on the piston-rod by tightening the nut 13 which, presses vthe internal st ationary'joint 14 bearing against the ring 15, which is held stationary on the rod 1v by the shoulder 16. The ring 15 bears a centeringv washer 17 madey j so asto have only few points ofcontact withthe cylinder.' It isV to be observed that the'mounting 4 alonev bears allv the organs of the ysliding joint and that of soft metal or liber and notched at it has, at the front,ia'screw-threaded recess 18, which is provided in order to Venable the momentaryfixingof the mounting screw.

In Fig. 4: '28 is the piston-rod, 29 the buffer-cylinder, 30 theexternal' end-face, 31 the mountingl ofthe joint bearing externally a Vstationary joint ring' 38, whichis held on the -body by the stud, 34; the mountingll bearsinternally the slidingv elastic joint 35 propped by the ring 36 under the adjustment-tension of the springwashers l37' tightened 'by' the nut 38. In front offsaid nut isfloc'ated a wiping leather 39 comprisedV between two distancerings k40; this wiping leather is clamped by the nut 41. The wholeof the removable 32 propped by the Y .mounting-tube is removed.

vable joint is effected joint is tightened up into the housing provided in the cylinder by the nut 42.

It is to be noted that the mounting 31 has, at the rear, a screw threaded recess 43 (similar to 'that'of Fig. l) which is providedV in order to enable the momentary fixing of the mounting screw.

Fig. 2 illustrates the manner of setting' into place the removableV joint for pistonhead of Fig. 1 at the beginning of the insertion of the joint intothe cylinder 2 by means of the mounting apparatus.

In the threads 3 provided at the front of the cylinder is screwed the mounting tube 19, of internal diameter equal to that Vof the cylinder 2, and Ywhich is provided with a plug 20 leavingv free passage to the operating screw 21, the end of which 22 has been screwed into the threaded recess 18 of the mounting` 4. This screw, guided by the feather 23, can move longitudinally under the action ofthe nut 24 provided with rthe handles 25.

Fig. 5 'illustrates' the same mounting-apparatus as adapted to the mounting of a removable joint for piston-rod. It is to be observed that, for maintaining and protecting the internal sliding elastic joint 35, a tube 44 has been located insider they mounting. This tube is utilized for the mounting in order to enable the passage of the sliding elastic joint 35, without' any risk of interference, above the screw-threads which exist almost generally at the end of a piston-rod.

The organization of the cartridge of the removable joint being known, as well as that ,of its mounting-apparatus, it is easy to understand the use of the same for setting into head.

The mounting tube 19 having been Vscrewed and tightened up on the cylinder 2,

the operating screw 21 is screwed into the threaded yrecess 18 of the mounting 4. The plug 20 is thereafter set into place, as well as lthe other organs ofthe apparatus. Under the action of the nut 24, the screw moves itself longitudinally, while pushing before Vitself the whole lof the removable joint, and

causes the latter to pass into thefcylinder 2, while capping the end of the piston rod 1 held centrally by the washer 17.

`The joint is thus pushed until it becomes tightened on the stationary joint 14. At this moment the operating nut 24 is removed, as well as the feather 23, the screw 21 is unscrewed from the mounting 4 and the 1t rests only to screw, until it be completely tightened up, the nut 13 on the rod 1, thereby insuring the fixing of the whole of the piston-head.

The operation of dismantling the removby approximately folplace a removable joint for pistonday of June, 1917.

lowing the reverse sequence of the above described operations. 4

It is obvious that, in the case when the clamping of the removable joint into the mounting-tube is` not very strong, the mounting-apparatus may be replaced by a mounting-rod and that the whole of the joint can then be pulled or pushed manually,

according to the operation to be effected.

What I claim is j l Y 1. In` combination, a piston rod having Va collar, a washer 'on the piston rod in engagementV with theA collarV thereof, a hydraulic jointon the piston rod and in engagement with the washer, said joint including a mounting having at one end a threaded recess for the connection of a tool therewith, and a nut on the piston rod and engaging the mounting to clamp the joint on the vpiston rod. l 2. In combination with a piston rod havino' a collar, a centering washer on the rod,

' der, a centering washer on the rod for maintaining the rod coaxial with the cylinder,

. a removable hydraulicjoint slidably mounted on the rod, said centering washer adapted said hydraulic oint having a snug lit on the rod, said rod having a shoulder against which the centering washer is maintained by the joint when the same is on to the rod within the cylinder, and means for locking the joint to the rod.

4. In a hydraulic joint cartridge, a piston rod, a mounting adapted to have a tight lit on the piston rod, said mounting having a shoulder in one end thereof, a sliding oint abutting against said shoulder, a ring engaging said joint, a nut threaded on to the other end of the mounting, yielding mem-` bers interposed between the ring andthe nut to move the joint against the shoulder, said nut having an outer reduced j face whereby a headis formed at one end of the nut, a dished washer resting against said head, a ring maintaining said dished'washer y against the head, and a threaded ring env1,710 threaded surgaging the reduced threaded surface of the nut maintaining said ring and dished washer against the headof the nut.

In testimony whereof I have'hereunto set my hand at St.-Etienne, France, this 20th EMILE iiiMAiLHo.

In the presence of two witnesses: JEAN BRUYERoY, Davis B. LEWIS. 

